问题 问答题 简答题

简述制氢及纯化装置的工艺流程。

答案

参考答案:

从电解槽电解小室阴极侧分解出来的氢气和碱液一起借助于碱液循环泵扬程和气体本身的升力,通过极板上阴极侧的出气孔流过气道,从电解槽左右极板流出,汇合后进入氢气分离洗涤器,在重力作用下,氢气和碱液进行分离,分离后的氢气通过分离洗涤器的气相空间,沿氢气管道进入气体冷却器蛇形管内,75-950C的氢气经过蛇形管冷却到450C以下,进入气水分离器,在这里,氢气与冷凝的水滴分离,含湿量降到4g/

Nm3.H2以下,而后氢气流经气动薄膜调节阀进入氢气进入氢气纯化装置,在纯化装置中,原料氢气先进入气液分离器除去游离水后进入脱氧器,在钯触媒催化作用下,使原料氢中的杂质氧与氢反应生成水汽,原料氢脱氧后,再经冷凝器,列管冷却器(除去游离凝水)除湿后,进入分子筛吸附干燥器二级去水。再通过过滤器除尘,从而获得高纯度氢气,送氢气贮罐供发电机氢冷使用。

单项选择题
完形填空
完形填空。
     Some myths (神话) are stories told since ancient times to explain the causes for natural happenings. The
Greek myth that explains why there are changes of   1   is about Demerter, the goddess of the harvest. She
had a daughter, Persephone, whom she loved very much. Hades, god of the underworld, fell in love with
Persephone, and he asked Zeus, the   2   of the gods, to give Persephone to him as his   3  . Zeus did not want
either to disappoint Hades or to upset Demeter, so he said he would not agree to the marriage, but neither would
he   4   it. Hades, therefore, decided to take the girl without   5  .
     When Persephone was picking flowers in the garden, he seized her and took her to the underworld. When
Demeter   6   what happened to Persephone, she became so   7   that she caused all plants to   8  . People were
in   9   of starving (挨饿). But Demeter was determined not to let crops grow  10  her daughter, Persephone,
was returned to her.  11 , still not wanting to disappoint Hades, decided upon a condition for Persephone's  12 .
She could go back to her mother if she had not  13  anything while she was in the underworld. Demeter  14  it
because she did not know that Persephone had eaten several Pomegranate (石榴) seeds in the underworld. 
     When Zeus  15  this, he agreed that Persephone could spend part of the year with her  16 , but he added that
since she had eaten the seeds, she must spend part of the year in the underworld. And so it  17  that when
Persephone is in the underworld, Demeter is sad and therefore  18  not let the crops grow.
     That is  19  we have winter when plants do not grow. When Persephone returns, Demeter is  20 , it is
spring, and plants begin to grow again.
( )1. A. age      
( )2. A. fighter   
( )3. A. daughter   
( )4. A. forbid     
( )5. A. warning   
( )6. A. worked out  
( )7. A. tired     
( )8. A. stop growing 
( )9. A. case      
( )10. A. when    
( )11. A. Hades     
( )12. A. journey   
( )13. A. heard    
( )14. A. accepted  
( )15. A. prepared 
( )16. A. ruler    
( )17. A. starts   
( )18. A. will    
( )19. A. how      
( )20. A. happy     
B. time      
B. advisor   
B. partner    
B. admit    
B. arrangement    
B. let out   
B. angry    
B. grow fast  
B. turn      
B. after    
B. Demeter   
B. marriage   
B. eaten    
B. doubted   
B. forgot     
B. god      
B. happens   
B. dare      
B. why      
B. fresh    
C. seasons     
C. ruler      
C. lover      
C. accept       
C. permission    
C. found out    
C. serious     
C. start growing   
C. hope        
C. until       
C. Zeus        
C. change       
C. found       
C. refused      
C. studied      
C. mother       
C. remains      
C. can        
C. because      
C. friendly      
D. periods     
D. winner      
D. wife        
D. forgive     
D. reason      
D. thought out 
D. excited     
D. grow slowly             
D. danger      
D. since       
D. Persephone  
D. return      
D. stolen      
D. understood  
D. discovered  
D. daughter    
D. works       
D. should      
D. where       
D. nice